Lessons from intramolecular singlet fission with covalently bound chromophores
Lessons from intramolecular singlet fission with covalently bound chromophores
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DOI：
10.1063/1.5135307
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发表时间：
2020-01-31
影响因子：
4.4
通讯作者：
Johnson, Justin C.
中科院分区：
文献类型：
--
作者：
Korovina, Nadezhda V.;Pompetti, Nicholas F.;Johnson, Justin C.
分子二聚体、低聚物和聚合物是光物理和光电子体系结构中的通用组件，可能会影响各种应用。我们给出了单态裂变领域中此类系统的一个观点，它有效地倍增激子并产生一种独特的激发态物种，即三重态对。生色团的选择和单元之间的连接性质，无论是几何上的还是化学上的，在光激发下进化的动力学方案中起着决定性的作用。特定的最终结果(例如，分离的和不相关的三联体对)是通过合理设计共价结合的发色团结构来寻求的，该结构是在最近的基础研究的指导下建立的，这些研究将结构与激发态人口流动动力学相关联。
Molecular dimers, oligomers, and polymers are versatile components in photophysical and optoelectronic architectures that could impact a variety of applications. We present a perspective on such systems in the field of singlet fission, which effectively multiplies excitons and produces a unique excited state species, the triplet pair. The choice of chromophore and the nature of the attachment between units, both geometrical and chemical, play a defining role in the dynamical scheme that evolves upon photoexcitation. Specific final outcomes (e.g., separated and uncorrelated triplet pairs) are being sought through rational design of covalently bound chromophore architectures built with guidance from recent fundamental studies that correlate structure with excited state population flow kinetics.